/Engine/Plugins/Runtime/MassGameplay/Source/MassSpawner/Public/MassEntityTemplateRegistry.h
Builds context from a list of traits
true if there were no validation errors
bool BuildFromTraits ( TConstArrayView< [UMassEntityTraitBase](API\Plugins\MassSpawner\UMassEntityTraitBase) * > Traits, const [UWorld](API\Runtime\Engine\Engine\UWorld) & World )